1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Mu - ex11.mu</title>
<meta name="Generator" content="Vim/8.1">
<meta name="plugin-version" content="vim8.1_v1">
<meta name="syntax" content="none">
<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy=">
<meta name="colorscheme" content="minimal-dark">
<style type="text/css">
<!--
pre { white-space: pre-wrap; font-family: monospace; color: #000000; background-color: #a8a8a8; }
body { font-size:12pt; font-family: monospace; color: #000000; background-color: #a8a8a8; }
a { color:inherit; }
* { font-size:12pt; font-size: 1em; }
.PreProc { color: #c000c0; }
.muRegEcx { color: #af875f; }
.Special { color: #ff6060; }
.LineNr { }
.muRegEdi { color: #87ffd7; }
.muRegEbx { color: #8787af; }
.muRegEdx { color: #878700; }
.Constant { color: #008787; }
.muRegEsi { color: #87d787; }
.muRegEax { color: #875f00; }
.Delimiter { color: #c000c0; }
.muFunction { color: #af5f00; text-decoration: underline; }
.muComment { color: #005faf; }
-->
</style>
<script type='text/javascript'>
<!--
/* function to open any folds containing a jumped-to line before jumping to it */
function JumpToLine()
{
var lineNum;
lineNum = window.location.hash;
lineNum = lineNum.substr(1); /* strip off '#' */
if (lineNum.indexOf('L') == -1) {
lineNum = 'L'+lineNum;
}
var lineElem = document.getElementById(lineNum);
/* Always jump to new location even if the line was hidden inside a fold, or
* we corrected the raw number to a line ID.
*/
if (lineElem) {
lineElem.scrollIntoView(true);
}
return true;
}
if ('onhashchange' in window) {
window.onhashchange = JumpToLine;
}
-->
</script>
</head>
<body onload='JumpToLine();'>
<a href='https://github.com/akkartik/mu/blob/main/ex11.mu'>https://github.com/akkartik/mu/blob/main/ex11.mu</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="muComment"># Demo of an interactive app: controlling a Bezier curve on screen</span>
<span id="L2" class="LineNr"> 2 </span><span class="muComment">#</span>
<span id="L3" class="LineNr"> 3 </span><span class="muComment"># To build a disk image:</span>
<span id="L4" class="LineNr"> 4 </span><span class="muComment"># ./translate ex11.mu # emits code.img</span>
<span id="L5" class="LineNr"> 5 </span><span class="muComment"># To run:</span>
<span id="L6" class="LineNr"> 6 </span><span class="muComment"># qemu-system-i386 code.img</span>
<span id="L7" class="LineNr"> 7 </span><span class="muComment"># Or:</span>
<span id="L8" class="LineNr"> 8 </span><span class="muComment"># bochs -f bochsrc # bochsrc loads code.img</span>
<span id="L9" class="LineNr"> 9 </span><span class="muComment">#</span>
<span id="L10" class="LineNr"> 10 </span><span class="muComment"># Expected output: a spline with 3 control points. Use `Tab` to switch cursor</span>
<span id="L11" class="LineNr"> 11 </span><span class="muComment"># between control points, and arrow keys to move the control point at the</span>
<span id="L12" class="LineNr"> 12 </span><span class="muComment"># cursor.</span>
<span id="L13" class="LineNr"> 13 </span>
<span id="L14" class="LineNr"> 14 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='ex11.mu.html#L14'>main</a></span> <a href='500fake-screen.mu.html#L14'>screen</a>: (addr <a href='500fake-screen.mu.html#L14'>screen</a>), keyboard: (addr keyboard), data-disk: (addr disk) <span class="Delimiter">{</span>
<span id="L15" class="LineNr"> 15 </span> <span class="PreProc">var</span> env-storage: <a href='ex11.mu.html#L25'>environment</a>
<span id="L16" class="LineNr"> 16 </span> <span class="PreProc">var</span> env/<span class="muRegEsi">esi</span>: (addr <a href='ex11.mu.html#L25'>environment</a>) <span class="Special"><-</span> address env-storage
<span id="L17" class="LineNr"> 17 </span> <a href='ex11.mu.html#L233'>initialize-environment</a> env, <span class="Constant">0x200</span> <span class="Constant">0x20</span>, <span class="Constant">0x180</span> <span class="Constant">0x90</span>, <span class="Constant">0x180</span> <span class="Constant">0x160</span>
<span id="L18" class="LineNr"> 18 </span> <span class="Delimiter">{</span>
<span id="L19" class="LineNr"> 19 </span> <a href='ex11.mu.html#L37'>render</a> <a href='500fake-screen.mu.html#L14'>screen</a>, env
<span id="L20" class="LineNr"> 20 </span> <a href='ex11.mu.html#L101'>edit</a> keyboard, env
<span id="L21" class="LineNr"> 21 </span> <span class="PreProc">loop</span>
<span id="L22" class="LineNr"> 22 </span> <span class="Delimiter">}</span>
<span id="L23" class="LineNr"> 23 </span><span class="Delimiter">}</span>
<span id="L24" class="LineNr"> 24 </span>
<span id="L25" class="LineNr"> 25 </span><span class="PreProc">type</span> <a href='ex11.mu.html#L25'>environment</a> <span class="Delimiter">{</span>
<span id="L26" class="LineNr"> 26 </span> p0: (handle <a href='ex11.mu.html#L32'>point</a>)
<span id="L27" class="LineNr"> 27 </span> p1: (handle <a href='ex11.mu.html#L32'>point</a>)
<span id="L28" class="LineNr"> 28 </span> p2: (handle <a href='ex11.mu.html#L32'>point</a>)
<span id="L29" class="LineNr"> 29 </span> <a href='ex11.mu.html#L77'>cursor</a>: (handle <a href='ex11.mu.html#L32'>point</a>) <span class="muComment"># one of p0, p1 or p2</span>
<span id="L30" class="LineNr"> 30 </span><span class="Delimiter">}</span>
<span id="L31" class="LineNr"> 31 </span>
<span id="L32" class="LineNr"> 32 </span><span class="PreProc">type</span> <a href='ex11.mu.html#L32'>point</a> <span class="Delimiter">{</span>
<span id="L33" class="LineNr"> 33 </span> x: int
<span id="L34" class="LineNr"> 34 </span> y: int
<span id="L35" class="LineNr"> 35 </span><span class="Delimiter">}</span>
<span id="L36" class="LineNr"> 36 </span>
<span id="L37" class="LineNr"> 37 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='ex11.mu.html#L37'>render</a></span> <a href='500fake-screen.mu.html#L14'>screen</a>: (addr <a href='500fake-screen.mu.html#L14'>screen</a>), _self: (addr <a href='ex11.mu.html#L25'>environment</a>) <span class="Delimiter">{</span>
<span id="L38" class="LineNr"> 38 </span> <a href='500fake-screen.mu.html#L251'>clear-screen</a> <a href='500fake-screen.mu.html#L14'>screen</a>
<span id="L39" class="LineNr"> 39 </span> <span class="PreProc">var</span> self/<span class="muRegEsi">esi</span>: (addr <a href='ex11.mu.html#L25'>environment</a>) <span class="Special"><-</span> copy _self
<span id="L40" class="LineNr"> 40 </span> <span class="PreProc">var</span> tmp-ah/<span class="muRegEcx">ecx</span>: (addr handle <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> get self, p0
<span id="L41" class="LineNr"> 41 </span> <span class="PreProc">var</span> tmp/<span class="muRegEax">eax</span>: (addr <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> <a href='120allocate.subx.html#L223'>lookup</a> *tmp-ah
<span id="L42" class="LineNr"> 42 </span> <span class="PreProc">var</span> p0/<span class="muRegEbx">ebx</span>: (addr <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> copy tmp
<span id="L43" class="LineNr"> 43 </span> tmp-ah <span class="Special"><-</span> get self, p1
<span id="L44" class="LineNr"> 44 </span> tmp <span class="Special"><-</span> <a href='120allocate.subx.html#L223'>lookup</a> *tmp-ah
<span id="L45" class="LineNr"> 45 </span> <span class="PreProc">var</span> p1/<span class="muRegEdx">edx</span>: (addr <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> copy tmp
<span id="L46" class="LineNr"> 46 </span> tmp-ah <span class="Special"><-</span> get self, p2
<span id="L47" class="LineNr"> 47 </span> tmp <span class="Special"><-</span> <a href='120allocate.subx.html#L223'>lookup</a> *tmp-ah
<span id="L48" class="LineNr"> 48 </span> <span class="PreProc">var</span> p2/<span class="muRegEcx">ecx</span>: (addr <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> copy tmp
<span id="L49" class="LineNr"> 49 </span> <span class="muComment"># control lines</span>
<span id="L50" class="LineNr"> 50 </span> <a href='ex11.mu.html#L216'>line</a> <a href='500fake-screen.mu.html#L14'>screen</a>, p0, p1, <span class="Constant">7</span>/color
<span id="L51" class="LineNr"> 51 </span> <a href='ex11.mu.html#L216'>line</a> <a href='500fake-screen.mu.html#L14'>screen</a>, p1, p2, <span class="Constant">7</span>/color
<span id="L52" class="LineNr"> 52 </span> <span class="muComment"># curve above control lines</span>
<span id="L53" class="LineNr"> 53 </span> <a href='ex11.mu.html#L64'>bezier</a> <a href='500fake-screen.mu.html#L14'>screen</a>, p0, p1, p2, <span class="Constant">0xc</span>/color
<span id="L54" class="LineNr"> 54 </span> <span class="muComment"># points above curve</span>
<span id="L55" class="LineNr"> 55 </span> <a href='ex11.mu.html#L226'>disc</a> <a href='500fake-screen.mu.html#L14'>screen</a>, p0, <span class="Constant">3</span>/radius, <span class="Constant">7</span>/color <span class="Constant">0xf</span>/border
<span id="L56" class="LineNr"> 56 </span> <a href='ex11.mu.html#L226'>disc</a> <a href='500fake-screen.mu.html#L14'>screen</a>, p1, <span class="Constant">3</span>/radius, <span class="Constant">7</span>/color <span class="Constant">0xf</span>/border
<span id="L57" class="LineNr"> 57 </span> <a href='ex11.mu.html#L226'>disc</a> <a href='500fake-screen.mu.html#L14'>screen</a>, p2, <span class="Constant">3</span>/radius, <span class="Constant">7</span>/color <span class="Constant">0xf</span>/border
<span id="L58" class="LineNr"> 58 </span> <span class="muComment"># cursor last of all</span>
<span id="L59" class="LineNr"> 59 </span> <span class="PreProc">var</span> cursor-ah/<span class="muRegEax">eax</span>: (addr handle <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> get self, <a href='ex11.mu.html#L77'>cursor</a>
<span id="L60" class="LineNr"> 60 </span> <span class="PreProc">var</span> <a href='ex11.mu.html#L77'>cursor</a>/<span class="muRegEax">eax</span>: (addr <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> <a href='120allocate.subx.html#L223'>lookup</a> *cursor-ah
<span id="L61" class="LineNr"> 61 </span> <a href='ex11.mu.html#L77'>cursor</a> <a href='500fake-screen.mu.html#L14'>screen</a>, <a href='ex11.mu.html#L77'>cursor</a>, <span class="Constant">0xa</span>/side, <span class="Constant">3</span>/color
<span id="L62" class="LineNr"> 62 </span><span class="Delimiter">}</span>
<span id="L63" class="LineNr"> 63 </span>
<span id="L64" class="LineNr"> 64 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='ex11.mu.html#L64'>bezier</a></span> <a href='500fake-screen.mu.html#L14'>screen</a>: (addr <a href='500fake-screen.mu.html#L14'>screen</a>), _p0: (addr <a href='ex11.mu.html#L32'>point</a>), _p1: (addr <a href='ex11.mu.html#L32'>point</a>), _p2: (addr <a href='ex11.mu.html#L32'>point</a>), color: int <span class="Delimiter">{</span>
<span id="L65" class="LineNr"> 65 </span> <span class="PreProc">var</span> p0/<span class="muRegEsi">esi</span>: (addr <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> copy _p0
<span id="L66" class="LineNr"> 66 </span> <span class="PreProc">var</span> x0/<span class="muRegEcx">ecx</span>: (addr int) <span class="Special"><-</span> get p0, x
<span id="L67" class="LineNr"> 67 </span> <span class="PreProc">var</span> y0/<span class="muRegEdx">edx</span>: (addr int) <span class="Special"><-</span> get p0, y
<span id="L68" class="LineNr"> 68 </span> <span class="PreProc">var</span> p1/<span class="muRegEsi">esi</span>: (addr <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> copy _p1
<span id="L69" class="LineNr"> 69 </span> <span class="PreProc">var</span> x1/<span class="muRegEbx">ebx</span>: (addr int) <span class="Special"><-</span> get p1, x
<span id="L70" class="LineNr"> 70 </span> <span class="PreProc">var</span> y1/<span class="muRegEax">eax</span>: (addr int) <span class="Special"><-</span> get p1, y
<span id="L71" class="LineNr"> 71 </span> <span class="PreProc">var</span> p2/<span class="muRegEsi">esi</span>: (addr <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> copy _p2
<span id="L72" class="LineNr"> 72 </span> <span class="PreProc">var</span> x2/<span class="muRegEdi">edi</span>: (addr int) <span class="Special"><-</span> get p2, x
<span id="L73" class="LineNr"> 73 </span> <span class="PreProc">var</span> y2/<span class="muRegEsi">esi</span>: (addr int) <span class="Special"><-</span> get p2, y
<span id="L74" class="LineNr"> 74 </span> <a href='509bezier.mu.html#L14'>draw-monotonic-bezier</a> <a href='500fake-screen.mu.html#L14'>screen</a>, *x0 *y0, *x1 *y1, *x2 *y2, color
<span id="L75" class="LineNr"> 75 </span><span class="Delimiter">}</span>
<span id="L76" class="LineNr"> 76 </span>
<span id="L77" class="LineNr"> 77 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='ex11.mu.html#L77'>cursor</a></span> <a href='500fake-screen.mu.html#L14'>screen</a>: (addr <a href='500fake-screen.mu.html#L14'>screen</a>), _p: (addr <a href='ex11.mu.html#L32'>point</a>), side: int, color: int <span class="Delimiter">{</span>
<span id="L78" class="LineNr"> 78 </span> <span class="PreProc">var</span> half-side/<span class="muRegEax">eax</span>: int <span class="Special"><-</span> copy side
<span id="L79" class="LineNr"> 79 </span> half-side <span class="Special"><-</span> shift-right <span class="Constant">1</span>
<span id="L80" class="LineNr"> 80 </span> <span class="PreProc">var</span> p/<span class="muRegEsi">esi</span>: (addr <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> copy _p
<span id="L81" class="LineNr"> 81 </span> <span class="PreProc">var</span> x-a/<span class="muRegEcx">ecx</span>: (addr int) <span class="Special"><-</span> get p, x
<span id="L82" class="LineNr"> 82 </span> <span class="PreProc">var</span> left-x/<span class="muRegEcx">ecx</span>: int <span class="Special"><-</span> copy *x-a
<span id="L83" class="LineNr"> 83 </span> left-x <span class="Special"><-</span> subtract half-side
<span id="L84" class="LineNr"> 84 </span> <span class="PreProc">var</span> y-a/<span class="muRegEdx">edx</span>: (addr int) <span class="Special"><-</span> get p, y
<span id="L85" class="LineNr"> 85 </span> <span class="PreProc">var</span> top-y/<span class="muRegEdx">edx</span>: int <span class="Special"><-</span> copy *y-a
<span id="L86" class="LineNr"> 86 </span> top-y <span class="Special"><-</span> subtract half-side
<span id="L87" class="LineNr"> 87 </span> <span class="PreProc">var</span> max/<span class="muRegEax">eax</span>: int <span class="Special"><-</span> copy left-x
<span id="L88" class="LineNr"> 88 </span> max <span class="Special"><-</span> add side
<span id="L89" class="LineNr"> 89 </span> <a href='507line.mu.html#L64'>draw-horizontal-line</a> <a href='500fake-screen.mu.html#L14'>screen</a>, top-y, left-x, max, color
<span id="L90" class="LineNr"> 90 </span> max <span class="Special"><-</span> copy top-y
<span id="L91" class="LineNr"> 91 </span> max <span class="Special"><-</span> add side
<span id="L92" class="LineNr"> 92 </span> <a href='507line.mu.html#L75'>draw-vertical-line</a> <a href='500fake-screen.mu.html#L14'>screen</a>, left-x, top-y, max, color
<span id="L93" class="LineNr"> 93 </span> <span class="PreProc">var</span> right-x/<span class="muRegEbx">ebx</span>: int <span class="Special"><-</span> copy left-x
<span id="L94" class="LineNr"> 94 </span> right-x <span class="Special"><-</span> add side
<span id="L95" class="LineNr"> 95 </span> <a href='507line.mu.html#L75'>draw-vertical-line</a> <a href='500fake-screen.mu.html#L14'>screen</a>, right-x, top-y, max, color
<span id="L96" class="LineNr"> 96 </span> <span class="PreProc">var</span> bottom-y/<span class="muRegEdx">edx</span>: int <span class="Special"><-</span> copy top-y
<span id="L97" class="LineNr"> 97 </span> bottom-y <span class="Special"><-</span> add side
<span id="L98" class="LineNr"> 98 </span> <a href='507line.mu.html#L64'>draw-horizontal-line</a> <a href='500fake-screen.mu.html#L14'>screen</a>, bottom-y, left-x, right-x, color
<span id="L99" class="LineNr"> 99 </span><span class="Delimiter">}</span>
<span id="L100" class="LineNr">100 </span>
<span id="L101" class="LineNr">101 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='ex11.mu.html#L101'>edit</a></span> keyboard: (addr keyboard), _self: (addr <a href='ex11.mu.html#L25'>environment</a>) <span class="Delimiter">{</span>
<span id="L102" class="LineNr">102 </span> <span class="PreProc">var</span> self/<span class="muRegEsi">esi</span>: (addr <a href='ex11.mu.html#L25'>environment</a>) <span class="Special"><-</span> copy _self
<span id="L103" class="LineNr">103 </span> <span class="PreProc">var</span> key/<span class="muRegEax">eax</span>: byte <span class="Special"><-</span> <a href='102keyboard.subx.html#L21'>read-key</a> keyboard
<span id="L104" class="LineNr">104 </span> compare key, <span class="Constant">0</span>
<span id="L105" class="LineNr">105 </span> <span class="PreProc">loop-if-=</span>
<span id="L106" class="LineNr">106 </span> <span class="Delimiter">{</span>
<span id="L107" class="LineNr">107 </span> compare key, <span class="Constant">9</span>/tab
<span id="L108" class="LineNr">108 </span> <span class="PreProc">break-if-!=</span>
<span id="L109" class="LineNr">109 </span> <a href='ex11.mu.html#L138'>toggle-cursor</a> self
<span id="L110" class="LineNr">110 </span> <span class="PreProc">return</span>
<span id="L111" class="LineNr">111 </span> <span class="Delimiter">}</span>
<span id="L112" class="LineNr">112 </span> <span class="Delimiter">{</span>
<span id="L113" class="LineNr">113 </span> compare key, <span class="Constant">0x80</span>/left-arrow
<span id="L114" class="LineNr">114 </span> <span class="PreProc">break-if-!=</span>
<span id="L115" class="LineNr">115 </span> <a href='ex11.mu.html#L168'>cursor-left</a> self
<span id="L116" class="LineNr">116 </span> <span class="PreProc">return</span>
<span id="L117" class="LineNr">117 </span> <span class="Delimiter">}</span>
<span id="L118" class="LineNr">118 </span> <span class="Delimiter">{</span>
<span id="L119" class="LineNr">119 </span> compare key, <span class="Constant">0x83</span>/right-arrow
<span id="L120" class="LineNr">120 </span> <span class="PreProc">break-if-!=</span>
<span id="L121" class="LineNr">121 </span> <a href='ex11.mu.html#L180'>cursor-right</a> self
<span id="L122" class="LineNr">122 </span> <span class="PreProc">return</span>
<span id="L123" class="LineNr">123 </span> <span class="Delimiter">}</span>
<span id="L124" class="LineNr">124 </span> <span class="Delimiter">{</span>
<span id="L125" class="LineNr">125 </span> compare key, <span class="Constant">0x81</span>/down-arrow
<span id="L126" class="LineNr">126 </span> <span class="PreProc">break-if-!=</span>
<span id="L127" class="LineNr">127 </span> <a href='ex11.mu.html#L204'>cursor-down</a> self
<span id="L128" class="LineNr">128 </span> <span class="PreProc">return</span>
<span id="L129" class="LineNr">129 </span> <span class="Delimiter">}</span>
<span id="L130" class="LineNr">130 </span> <span class="Delimiter">{</span>
<span id="L131" class="LineNr">131 </span> compare key, <span class="Constant">0x82</span>/up-arrow
<span id="L132" class="LineNr">132 </span> <span class="PreProc">break-if-!=</span>
<span id="L133" class="LineNr">133 </span> <a href='ex11.mu.html#L192'>cursor-up</a> self
<span id="L134" class="LineNr">134 </span> <span class="PreProc">return</span>
<span id="L135" class="LineNr">135 </span> <span class="Delimiter">}</span>
<span id="L136" class="LineNr">136 </span><span class="Delimiter">}</span>
<span id="L137" class="LineNr">137 </span>
<span id="L138" class="LineNr">138 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='ex11.mu.html#L138'>toggle-cursor</a></span> _self: (addr <a href='ex11.mu.html#L25'>environment</a>) <span class="Delimiter">{</span>
<span id="L139" class="LineNr">139 </span> <span class="PreProc">var</span> self/<span class="muRegEsi">esi</span>: (addr <a href='ex11.mu.html#L25'>environment</a>) <span class="Special"><-</span> copy _self
<span id="L140" class="LineNr">140 </span> <span class="PreProc">var</span> cursor-ah/<span class="muRegEdi">edi</span>: (addr handle <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> get self, <a href='ex11.mu.html#L77'>cursor</a>
<span id="L141" class="LineNr">141 </span> <span class="PreProc">var</span> p0-ah/<span class="muRegEcx">ecx</span>: (addr handle <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> get self, p0
<span id="L142" class="LineNr">142 </span> <span class="PreProc">var</span> p1-ah/<span class="muRegEdx">edx</span>: (addr handle <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> get self, p1
<span id="L143" class="LineNr">143 </span> <span class="PreProc">var</span> p2-ah/<span class="muRegEbx">ebx</span>: (addr handle <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> get self, p2
<span id="L144" class="LineNr">144 </span> <span class="Delimiter">{</span>
<span id="L145" class="LineNr">145 </span> <span class="PreProc">var</span> p0?/<span class="muRegEax">eax</span>: boolean <span class="Special"><-</span> <a href='120allocate.subx.html#L448'>handle-equal?</a> *p0-ah, *cursor-ah
<span id="L146" class="LineNr">146 </span> compare p0?, <span class="Constant">0</span>/false
<span id="L147" class="LineNr">147 </span> <span class="PreProc">break-if-=</span>
<span id="L148" class="LineNr">148 </span> copy-object p1-ah, cursor-ah
<span id="L149" class="LineNr">149 </span> <span class="PreProc">return</span>
<span id="L150" class="LineNr">150 </span> <span class="Delimiter">}</span>
<span id="L151" class="LineNr">151 </span> <span class="Delimiter">{</span>
<span id="L152" class="LineNr">152 </span> <span class="PreProc">var</span> p1?/<span class="muRegEax">eax</span>: boolean <span class="Special"><-</span> <a href='120allocate.subx.html#L448'>handle-equal?</a> *p1-ah, *cursor-ah
<span id="L153" class="LineNr">153 </span> compare p1?, <span class="Constant">0</span>/false
<span id="L154" class="LineNr">154 </span> <span class="PreProc">break-if-=</span>
<span id="L155" class="LineNr">155 </span> copy-object p2-ah, cursor-ah
<span id="L156" class="LineNr">156 </span> <span class="PreProc">return</span>
<span id="L157" class="LineNr">157 </span> <span class="Delimiter">}</span>
<span id="L158" class="LineNr">158 </span> <span class="Delimiter">{</span>
<span id="L159" class="LineNr">159 </span> <span class="PreProc">var</span> p2?/<span class="muRegEax">eax</span>: boolean <span class="Special"><-</span> <a href='120allocate.subx.html#L448'>handle-equal?</a> *p2-ah, *cursor-ah
<span id="L160" class="LineNr">160 </span> compare p2?, <span class="Constant">0</span>/false
<span id="L161" class="LineNr">161 </span> <span class="PreProc">break-if-=</span>
<span id="L162" class="LineNr">162 </span> copy-object p0-ah, cursor-ah
<span id="L163" class="LineNr">163 </span> <span class="PreProc">return</span>
<span id="L164" class="LineNr">164 </span> <span class="Delimiter">}</span>
<span id="L165" class="LineNr">165 </span> <a href='317abort.subx.html#L5'>abort</a> <span class="Constant">"lost cursor"</span>
<span id="L166" class="LineNr">166 </span><span class="Delimiter">}</span>
<span id="L167" class="LineNr">167 </span>
<span id="L168" class="LineNr">168 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='ex11.mu.html#L168'>cursor-left</a></span> _self: (addr <a href='ex11.mu.html#L25'>environment</a>) <span class="Delimiter">{</span>
<span id="L169" class="LineNr">169 </span> <span class="PreProc">var</span> self/<span class="muRegEsi">esi</span>: (addr <a href='ex11.mu.html#L25'>environment</a>) <span class="Special"><-</span> copy _self
<span id="L170" class="LineNr">170 </span> <span class="PreProc">var</span> cursor-ah/<span class="muRegEsi">esi</span>: (addr handle <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> get self, <a href='ex11.mu.html#L77'>cursor</a>
<span id="L171" class="LineNr">171 </span> <span class="PreProc">var</span> <a href='ex11.mu.html#L77'>cursor</a>/<span class="muRegEax">eax</span>: (addr <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> <a href='120allocate.subx.html#L223'>lookup</a> *cursor-ah
<span id="L172" class="LineNr">172 </span> <span class="PreProc">var</span> cursor-x/<span class="muRegEax">eax</span>: (addr int) <span class="Special"><-</span> get <a href='ex11.mu.html#L77'>cursor</a>, x
<span id="L173" class="LineNr">173 </span> compare *cursor-x, <span class="Constant">0x20</span>
<span id="L174" class="LineNr">174 </span> <span class="Delimiter">{</span>
<span id="L175" class="LineNr">175 </span> <span class="PreProc">break-if-<</span>
<span id="L176" class="LineNr">176 </span> subtract-from *cursor-x, <span class="Constant">0x20</span>
<span id="L177" class="LineNr">177 </span> <span class="Delimiter">}</span>
<span id="L178" class="LineNr">178 </span><span class="Delimiter">}</span>
<span id="L179" class="LineNr">179 </span>
<span id="L180" class="LineNr">180 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='ex11.mu.html#L180'>cursor-right</a></span> _self: (addr <a href='ex11.mu.html#L25'>environment</a>) <span class="Delimiter">{</span>
<span id="L181" class="LineNr">181 </span> <span class="PreProc">var</span> self/<span class="muRegEsi">esi</span>: (addr <a href='ex11.mu.html#L25'>environment</a>) <span class="Special"><-</span> copy _self
<span id="L182" class="LineNr">182 </span> <span class="PreProc">var</span> cursor-ah/<span class="muRegEsi">esi</span>: (addr handle <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> get self, <a href='ex11.mu.html#L77'>cursor</a>
<span id="L183" class="LineNr">183 </span> <span class="PreProc">var</span> <a href='ex11.mu.html#L77'>cursor</a>/<span class="muRegEax">eax</span>: (addr <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> <a href='120allocate.subx.html#L223'>lookup</a> *cursor-ah
<span id="L184" class="LineNr">184 </span> <span class="PreProc">var</span> cursor-x/<span class="muRegEax">eax</span>: (addr int) <span class="Special"><-</span> get <a href='ex11.mu.html#L77'>cursor</a>, x
<span id="L185" class="LineNr">185 </span> compare *cursor-x, <span class="Constant">0x3f0</span>
<span id="L186" class="LineNr">186 </span> <span class="Delimiter">{</span>
<span id="L187" class="LineNr">187 </span> <span class="PreProc">break-if-></span>
<span id="L188" class="LineNr">188 </span> add-to *cursor-x, <span class="Constant">0x20</span>
<span id="L189" class="LineNr">189 </span> <span class="Delimiter">}</span>
<span id="L190" class="LineNr">190 </span><span class="Delimiter">}</span>
<span id="L191" class="LineNr">191 </span>
<span id="L192" class="LineNr">192 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='ex11.mu.html#L192'>cursor-up</a></span> _self: (addr <a href='ex11.mu.html#L25'>environment</a>) <span class="Delimiter">{</span>
<span id="L193" class="LineNr">193 </span> <span class="PreProc">var</span> self/<span class="muRegEsi">esi</span>: (addr <a href='ex11.mu.html#L25'>environment</a>) <span class="Special"><-</span> copy _self
<span id="L194" class="LineNr">194 </span> <span class="PreProc">var</span> cursor-ah/<span class="muRegEsi">esi</span>: (addr handle <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> get self, <a href='ex11.mu.html#L77'>cursor</a>
<span id="L195" class="LineNr">195 </span> <span class="PreProc">var</span> <a href='ex11.mu.html#L77'>cursor</a>/<span class="muRegEax">eax</span>: (addr <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> <a href='120allocate.subx.html#L223'>lookup</a> *cursor-ah
<span id="L196" class="LineNr">196 </span> <span class="PreProc">var</span> cursor-y/<span class="muRegEax">eax</span>: (addr int) <span class="Special"><-</span> get <a href='ex11.mu.html#L77'>cursor</a>, y
<span id="L197" class="LineNr">197 </span> compare *cursor-y, <span class="Constant">0x20</span>
<span id="L198" class="LineNr">198 </span> <span class="Delimiter">{</span>
<span id="L199" class="LineNr">199 </span> <span class="PreProc">break-if-<</span>
<span id="L200" class="LineNr">200 </span> subtract-from *cursor-y, <span class="Constant">0x20</span>
<span id="L201" class="LineNr">201 </span> <span class="Delimiter">}</span>
<span id="L202" class="LineNr">202 </span><span class="Delimiter">}</span>
<span id="L203" class="LineNr">203 </span>
<span id="L204" class="LineNr">204 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='ex11.mu.html#L204'>cursor-down</a></span> _self: (addr <a href='ex11.mu.html#L25'>environment</a>) <span class="Delimiter">{</span>
<span id="L205" class="LineNr">205 </span> <span class="PreProc">var</span> self/<span class="muRegEsi">esi</span>: (addr <a href='ex11.mu.html#L25'>environment</a>) <span class="Special"><-</span> copy _self
<span id="L206" class="LineNr">206 </span> <span class="PreProc">var</span> cursor-ah/<span class="muRegEsi">esi</span>: (addr handle <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> get self, <a href='ex11.mu.html#L77'>cursor</a>
<span id="L207" class="LineNr">207 </span> <span class="PreProc">var</span> <a href='ex11.mu.html#L77'>cursor</a>/<span class="muRegEax">eax</span>: (addr <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> <a href='120allocate.subx.html#L223'>lookup</a> *cursor-ah
<span id="L208" class="LineNr">208 </span> <span class="PreProc">var</span> cursor-y/<span class="muRegEax">eax</span>: (addr int) <span class="Special"><-</span> get <a href='ex11.mu.html#L77'>cursor</a>, y
<span id="L209" class="LineNr">209 </span> compare *cursor-y, <span class="Constant">0x2f0</span>
<span id="L210" class="LineNr">210 </span> <span class="Delimiter">{</span>
<span id="L211" class="LineNr">211 </span> <span class="PreProc">break-if-></span>
<span id="L212" class="LineNr">212 </span> add-to *cursor-y, <span class="Constant">0x20</span>
<span id="L213" class="LineNr">213 </span> <span class="Delimiter">}</span>
<span id="L214" class="LineNr">214 </span><span class="Delimiter">}</span>
<span id="L215" class="LineNr">215 </span>
<span id="L216" class="LineNr">216 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='ex11.mu.html#L216'>line</a></span> <a href='500fake-screen.mu.html#L14'>screen</a>: (addr <a href='500fake-screen.mu.html#L14'>screen</a>), _p0: (addr <a href='ex11.mu.html#L32'>point</a>), _p1: (addr <a href='ex11.mu.html#L32'>point</a>), color: int <span class="Delimiter">{</span>
<span id="L217" class="LineNr">217 </span> <span class="PreProc">var</span> p0/<span class="muRegEsi">esi</span>: (addr <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> copy _p0
<span id="L218" class="LineNr">218 </span> <span class="PreProc">var</span> x0/<span class="muRegEcx">ecx</span>: (addr int) <span class="Special"><-</span> get p0, x
<span id="L219" class="LineNr">219 </span> <span class="PreProc">var</span> y0/<span class="muRegEdx">edx</span>: (addr int) <span class="Special"><-</span> get p0, y
<span id="L220" class="LineNr">220 </span> <span class="PreProc">var</span> p1/<span class="muRegEsi">esi</span>: (addr <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> copy _p1
<span id="L221" class="LineNr">221 </span> <span class="PreProc">var</span> x1/<span class="muRegEbx">ebx</span>: (addr int) <span class="Special"><-</span> get p1, x
<span id="L222" class="LineNr">222 </span> <span class="PreProc">var</span> y1/<span class="muRegEax">eax</span>: (addr int) <span class="Special"><-</span> get p1, y
<span id="L223" class="LineNr">223 </span> <a href='507line.mu.html#L1'>draw-line</a> <a href='500fake-screen.mu.html#L14'>screen</a>, *x0 *y0, *x1 *y1, color
<span id="L224" class="LineNr">224 </span><span class="Delimiter">}</span>
<span id="L225" class="LineNr">225 </span>
<span id="L226" class="LineNr">226 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='ex11.mu.html#L226'>disc</a></span> <a href='500fake-screen.mu.html#L14'>screen</a>: (addr <a href='500fake-screen.mu.html#L14'>screen</a>), _p: (addr <a href='ex11.mu.html#L32'>point</a>), radius: int, color: int, border-color: int <span class="Delimiter">{</span>
<span id="L227" class="LineNr">227 </span> <span class="PreProc">var</span> p/<span class="muRegEsi">esi</span>: (addr <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> copy _p
<span id="L228" class="LineNr">228 </span> <span class="PreProc">var</span> x/<span class="muRegEcx">ecx</span>: (addr int) <span class="Special"><-</span> get p, x
<span id="L229" class="LineNr">229 </span> <span class="PreProc">var</span> y/<span class="muRegEdx">edx</span>: (addr int) <span class="Special"><-</span> get p, y
<span id="L230" class="LineNr">230 </span> <a href='508circle.mu.html#L80'>draw-disc</a> <a href='500fake-screen.mu.html#L14'>screen</a>, *x *y, radius, color, border-color
<span id="L231" class="LineNr">231 </span><span class="Delimiter">}</span>
<span id="L232" class="LineNr">232 </span>
<span id="L233" class="LineNr">233 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='ex11.mu.html#L233'>initialize-environment</a></span> _self: (addr <a href='ex11.mu.html#L25'>environment</a>), x0: int, y0: int, x1: int, y1: int, x2: int, y2: int <span class="Delimiter">{</span>
<span id="L234" class="LineNr">234 </span> <span class="PreProc">var</span> self/<span class="muRegEsi">esi</span>: (addr <a href='ex11.mu.html#L25'>environment</a>) <span class="Special"><-</span> copy _self
<span id="L235" class="LineNr">235 </span> <span class="PreProc">var</span> p0-ah/<span class="muRegEax">eax</span>: (addr handle <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> get self, p0
<span id="L236" class="LineNr">236 </span> <a href='120allocate.subx.html#L43'>allocate</a> p0-ah
<span id="L237" class="LineNr">237 </span> <span class="PreProc">var</span> p0/<span class="muRegEax">eax</span>: (addr <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> <a href='120allocate.subx.html#L223'>lookup</a> *p0-ah
<span id="L238" class="LineNr">238 </span> <a href='ex11.mu.html#L253'>initialize-point</a> p0, x0 y0
<span id="L239" class="LineNr">239 </span> <span class="PreProc">var</span> p1-ah/<span class="muRegEax">eax</span>: (addr handle <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> get self, p1
<span id="L240" class="LineNr">240 </span> <a href='120allocate.subx.html#L43'>allocate</a> p1-ah
<span id="L241" class="LineNr">241 </span> <span class="PreProc">var</span> p1/<span class="muRegEax">eax</span>: (addr <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> <a href='120allocate.subx.html#L223'>lookup</a> *p1-ah
<span id="L242" class="LineNr">242 </span> <a href='ex11.mu.html#L253'>initialize-point</a> p1, x1 y1
<span id="L243" class="LineNr">243 </span> <span class="PreProc">var</span> p2-ah/<span class="muRegEax">eax</span>: (addr handle <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> get self, p2
<span id="L244" class="LineNr">244 </span> <a href='120allocate.subx.html#L43'>allocate</a> p2-ah
<span id="L245" class="LineNr">245 </span> <span class="PreProc">var</span> p2/<span class="muRegEax">eax</span>: (addr <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> <a href='120allocate.subx.html#L223'>lookup</a> *p2-ah
<span id="L246" class="LineNr">246 </span> <a href='ex11.mu.html#L253'>initialize-point</a> p2, x2 y2
<span id="L247" class="LineNr">247 </span> <span class="muComment"># cursor initially at p0</span>
<span id="L248" class="LineNr">248 </span> <span class="PreProc">var</span> cursor-ah/<span class="muRegEdi">edi</span>: (addr handle <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> get self, <a href='ex11.mu.html#L77'>cursor</a>
<span id="L249" class="LineNr">249 </span> <span class="PreProc">var</span> src-ah/<span class="muRegEsi">esi</span>: (addr handle <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> get self, p0
<span id="L250" class="LineNr">250 </span> copy-object src-ah, cursor-ah
<span id="L251" class="LineNr">251 </span><span class="Delimiter">}</span>
<span id="L252" class="LineNr">252 </span>
<span id="L253" class="LineNr">253 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='ex11.mu.html#L253'>initialize-point</a></span> _p: (addr <a href='ex11.mu.html#L32'>point</a>), x: int, y: int <span class="Delimiter">{</span>
<span id="L254" class="LineNr">254 </span> <span class="PreProc">var</span> p/<span class="muRegEsi">esi</span>: (addr <a href='ex11.mu.html#L32'>point</a>) <span class="Special"><-</span> copy _p
<span id="L255" class="LineNr">255 </span> <span class="PreProc">var</span> dest/<span class="muRegEax">eax</span>: (addr int) <span class="Special"><-</span> get p, x
<span id="L256" class="LineNr">256 </span> <span class="PreProc">var</span> src/<span class="muRegEcx">ecx</span>: int <span class="Special"><-</span> copy x
<span id="L257" class="LineNr">257 </span> copy-to *dest, src
<span id="L258" class="LineNr">258 </span> dest <span class="Special"><-</span> get p, y
<span id="L259" class="LineNr">259 </span> src <span class="Special"><-</span> copy y
<span id="L260" class="LineNr">260 </span> copy-to *dest, src
<span id="L261" class="LineNr">261 </span><span class="Delimiter">}</span>
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->
|